1. Product Overview 6301-2RS1/C3GJN single row deep groove ball bearing, standard metric dimension 12×37×12mm. Code Definition 6301: Small high-load deep groove ball base model with larger steel balls for higher radial load capacity 2RS1: Double-sided contact rubber lip seal, fully isolates dust, moisture and fine abrasive particles C3GJN: Custom widened C3 radial clearance matched with exclusive anti-high-temperature oxidation special grease Classic deep groove raceway can